Employee Stock Award, Option and Benefit Plans - Stock Options and Awards Activity (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Sep. 28, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options	86,000	107,000	270,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	6,747,691
Restricted Stock Units and Awards [Abstract]
Restricted Stock Shares Withheld to Cover Payment of Taxes	91,000	118,000	95,000
Restricted Shares, Value, Shares Withheld for Payment of Taxes	$ 5.3	$ 7.8	$ 4.2
Number of common stock remain available for grant	5,514,171
Shares, Outstanding	86,000
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price	$ 30.09
Weighted average remaining contractual term	3 years 4 months 24 days
Performance RSUs
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested stock, Number of Shares, beginning of period	229,000	213,000	152,000
Nonvested stock, Weighted Average Grant Date Fair Value, beginning of period	$ 61.46	$ 54.63	$ 57.55
Granted, Number of Shares	51,000	52,000	97,000
Granted, Weighted Average Grant Date Fair Value	$ 70.57	$ 77.10	$ 48.48
Vested, Number of Shares	(38,000)	(33,000)	(28,000)	[1]
Vested, Weighted Average Grant Date Fair Value	$ 53.46	$ 43.25	$ 49.50	[1]
Forfeited, Number of Shares	(43,000)	(3,000)	(8,000)
Forfeited, Weighted Average Grant Date Fair Value	$ 53.46	$ 46.99	$ 53.30
Nonvested stock, Number of Shares, end of period	199,000	229,000	213,000
Nonvested stock, Weighted Average Grant Date Fair Value, end of period	$ 67.09	$ 61.46	$ 54.63
Performance RSUs | Minimum
Restricted Stock Units and Awards [Abstract]
Percentage of performance-based awards earned by recipient	0.00%
Performance RSUs | Maximum
Restricted Stock Units and Awards [Abstract]
Percentage of performance-based awards earned by recipient	200.00%
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested stock, Number of Shares, beginning of period	390,000	453,000	440,000
Nonvested stock, Weighted Average Grant Date Fair Value, beginning of period	$ 58.66	$ 48.22	$ 47.81
Granted, Number of Shares	237,000	226,000	273,000
Granted, Weighted Average Grant Date Fair Value	$ 64.84	$ 65.80	$ 44.03
Vested, Number of Shares	(219,000)	(275,000)	(254,000)	[1]
Vested, Weighted Average Grant Date Fair Value	$ 53.62	$ 47.44	$ 43.06	[1]
Forfeited, Number of Shares	(14,000)	(14,000)	(6,000)
Forfeited, Weighted Average Grant Date Fair Value	$ 59.06	$ 56.06	$ 45.59
Nonvested stock, Number of Shares, end of period	394,000	390,000	453,000
Nonvested stock, Weighted Average Grant Date Fair Value, end of period	$ 65.17	$ 58.66	$ 48.22

[1] Service-based restricted stock vested during each fiscal year. Performance awards and units included at 100% of target goal; under the terms of the awards, the recipient may earn between 0% and 200% of the award.